Not sure who you're asking, but the posting members locations are usually listed just under the user name...like yours is.
Anyway, you seem to have a problem and various people are ready to help you. Some info from you might help you get some definitive answers...regarding your suspect alternator, has it been checked out properly? Output, noises (rattles or similar) or visible signs of malfunction? If any of these areas are suspect, then it almost certainly needs attention....
...or is the problem more like slow starting, half flat battery type of thing?
Reason I'm asking is because I've just had a similar type of problem with my TDI 1.9. My Exide battery was only 15 months old and as the temps started to drop, I seemed to be having 'flat battery' problems..I suspected the alternator was getting tired...a test at my local Bosch garage changed my mind and it turned out to be a dodgy battery. A new Bosch one fitted and no problems since. Just a shame that Exide battery warranties are only good for 12 months over here...I'm wiser for the experience.
Just some food for thought.